Abstract: The soll corrosiveness along Lun-Ku pipeline route is studied on the basis of the investigation and the of tests results. The pipeline route is divided into four sections and corrosiveness three classes. Especially, the 70km long section near korla, though in a dry gobi region, has an extremely high corrosive soil environment which can be grouped into Class V according to the national five class standard for soil classification. It is shown by pattern recognition of environmental corrosion factors, that, by using such three key parameters as soil salinity water content and homogeneity, the corrosion models of soil enviroment along pipeline route can be established to quantatively evaluate and predict the soil corrosiveness with a reliability of 90%. In addition, also studied is the macro cell effect on soil corrosiveness, with its actual effects in hormontal and vertical (0 to 2 meters underground idirections evaluated in the range of whole line route. According to the comprebensive analysis, corresponding precautions are grven for different pipeline sections.